#define _CRT_SECURE_NO_WARNINGS
struct A
{
    char a : 3; 
    char b : 4;
    char c : 5;
    char d : 4;
};
int main() {
    struct A s = { 0 };
    s.a = 10;
    s.b = 12;
    s.c = 3;
    s.d = 4;
    return 0;
}







